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On forward -backward mode for direction of arrival estimation
KTH, Superseded Departments, Signals, Sensors and Systems.ORCID iD: 0000-0002-6855-5868
Department of Systems and Control, Uppsala University, Uppsala, Sweden.
1998 (English)In: European Signal Processing Conference, 1998, Vol. 3, 189-192 p.Conference paper (Refereed)
Abstract [en]

We apply the MODE (method of direction estimation) principle to the forward-backward (FB) covariance of the output vector of a sensor array to obtain what we call the FB-MODE procedure. The derivation of FBMODE is an interesting exercise in matrix analysis,the outcome of which was somewhat unexpected: FBMODE simply consists of applying the standard MODEapproach to the eigenelements of the FB sample covariance matrix. By using an asymptotic expansion technique we also establish the surprising result that FB-MODE is outperformed, from a statistical standpoint, by the standard MODE applied to the forward only sample covariance (F-MODE). We believe this tobe an important result that shows that the FB approach,which proved quite useful for improving the performance of many suboptimal array processing methods, shouldnot be used with a statistically optimal method such asF-MODE.

Place, publisher, year, edition, pages
1998. Vol. 3, 189-192 p.
Keyword [en]
MODE (method of direction estimation), forward-backward (FB) covariance, matrix analysis, suboptimal array processing methods
National Category
Signal Processing
URN: urn:nbn:se:kth:diva-86451OAI: diva2:500719
European Signal Processing Conference (EUSIPCO), Rhodes, Greece, Sep. 1998
NR 20140805Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2012-02-13Bibliographically approved

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